﴿ وَإِنِّى كُلَّمَا دَعَوْتُهُمْ لِتَغْفِرَ لَهُمْ جَعَلُوٓا۟ أَصَٰبِعَهُمْ فِىٓ ءَاذَانِهِمْ وَٱسْتَغْشَوْا۟ ثِيَابَهُمْ وَأَصَرُّوا۟ وَٱسْتَكْبَرُوا۟ ٱسْتِكْبَارًۭا ﴾

“And behold, whenever I called unto them with a view to Thy granting them forgiveness, they put their fingers into their ears, and wrapped themselves up in their garments [of sin]; and grew obstinate, and became [yet more] arrogant in their false pride.”

Please check ayah 71:20 for complete tafsir.